Follow the water: Connecting a CO2 reservoir and bleached sandstone to iron-rich concretions in the Navajo Sandstone of south-central Utah, USA: COMMENT

Abstract

Concretions comprise an important diagenetic record of fluid flow in the Jurassic Navajo Sandstone (Utah, United States). Mobilization and transport of chemically reduced Fe+2 in solution likely occurs via groundwater with CH4 or other hydrocarbons as reducing agents ([Beitler et al., 2003][1]; [